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Finding the Fourth Proportional to 70,901.91, 97,840.03 and 39,070.81

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Solution

The fourth proportional to 70,901.91, 97,840.03 and 39,070.81 is: 53,915.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,901.91 : 97,840.03 = 39,070.81 : x
  2. Step 2: Convert to fraction form
    70,901.91/97,840.03 = 39,070.81/x
  3. Step 3: Cross multiply
    70,901.91x = 97,840.03 × 39,070.81
  4. Step 4: Simplify right side
    70,901.91x = 3,822,688,660.17
  5. Step 5: Solve for x
    x = 3,822,688,660.17/70,901.91
  6. Step 6: Final answer
    x = 53,915.17

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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.