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Finding the Fourth Proportional to 67,402.80, 93,010.86 and 39,103.02

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Solution

The fourth proportional to 67,402.80, 93,010.86 and 39,103.02 is: 53,959.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,402.80 : 93,010.86 = 39,103.02 : x
  2. Step 2: Convert to fraction form
    67,402.80/93,010.86 = 39,103.02/x
  3. Step 3: Cross multiply
    67,402.80x = 93,010.86 × 39,103.02
  4. Step 4: Simplify right side
    67,402.80x = 3,637,005,518.80
  5. Step 5: Solve for x
    x = 3,637,005,518.80/67,402.80
  6. Step 6: Final answer
    x = 53,959.26

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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.