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Finding the Fourth Proportional to 60,985.32, 84,130.29 and 38,312.88

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Solution

The fourth proportional to 60,985.32, 84,130.29 and 38,312.88 is: 52,853.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,985.32 : 84,130.29 = 38,312.88 : x
  2. Step 2: Convert to fraction form
    60,985.32/84,130.29 = 38,312.88/x
  3. Step 3: Cross multiply
    60,985.32x = 84,130.29 × 38,312.88
  4. Step 4: Simplify right side
    60,985.32x = 3,223,273,705.14
  5. Step 5: Solve for x
    x = 3,223,273,705.14/60,985.32
  6. Step 6: Final answer
    x = 52,853.27

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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.