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Finding the Fourth Proportional to 65,296.88, 90,127.43 and 38,448.08

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Solution

The fourth proportional to 65,296.88, 90,127.43 and 38,448.08 is: 53,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,296.88 : 90,127.43 = 38,448.08 : x
  2. Step 2: Convert to fraction form
    65,296.88/90,127.43 = 38,448.08/x
  3. Step 3: Cross multiply
    65,296.88x = 90,127.43 × 38,448.08
  4. Step 4: Simplify right side
    65,296.88x = 3,465,226,960.27
  5. Step 5: Solve for x
    x = 3,465,226,960.27/65,296.88
  6. Step 6: Final answer
    x = 53,068.80

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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.