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Finding the Fourth Proportional to 70,937.13, 97,890.72 and 38,671.08

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Solution

The fourth proportional to 70,937.13, 97,890.72 and 38,671.08 is: 53,364.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,937.13 : 97,890.72 = 38,671.08 : x
  2. Step 2: Convert to fraction form
    70,937.13/97,890.72 = 38,671.08/x
  3. Step 3: Cross multiply
    70,937.13x = 97,890.72 × 38,671.08
  4. Step 4: Simplify right side
    70,937.13x = 3,785,539,864.38
  5. Step 5: Solve for x
    x = 3,785,539,864.38/70,937.13
  6. Step 6: Final answer
    x = 53,364.72

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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.