Home / 39,078,009.80-53,934,108.88-21,679,960.06

Finding the Fourth Proportional to 39,078,009.80, 53,934,108.88 and 21,679,960.06

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Solution

The fourth proportional to 39,078,009.80, 53,934,108.88 and 21,679,960.06 is: 29,921,926.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,078,009.80 : 53,934,108.88 = 21,679,960.06 : x
  2. Step 2: Convert to fraction form
    39,078,009.80/53,934,108.88 = 21,679,960.06/x
  3. Step 3: Cross multiply
    39,078,009.80x = 53,934,108.88 × 21,679,960.06
  4. Step 4: Simplify right side
    39,078,009.80x = 1,169,289,326,390,091.25
  5. Step 5: Solve for x
    x = 1,169,289,326,390,091.25/39,078,009.80
  6. Step 6: Final answer
    x = 29,921,926.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.