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Finding the Fourth Proportional to 70,572.34, 97,389.43 and 38,307.61

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Solution

The fourth proportional to 70,572.34, 97,389.43 and 38,307.61 is: 52,864.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,572.34 : 97,389.43 = 38,307.61 : x
  2. Step 2: Convert to fraction form
    70,572.34/97,389.43 = 38,307.61/x
  3. Step 3: Cross multiply
    70,572.34x = 97,389.43 × 38,307.61
  4. Step 4: Simplify right side
    70,572.34x = 3,730,756,302.56
  5. Step 5: Solve for x
    x = 3,730,756,302.56/70,572.34
  6. Step 6: Final answer
    x = 52,864.29

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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.