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Finding the Fourth Proportional to 70,808.04, 97,715.14 and 38,977.46

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Solution

The fourth proportional to 70,808.04, 97,715.14 and 38,977.46 is: 53,788.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,808.04 : 97,715.14 = 38,977.46 : x
  2. Step 2: Convert to fraction form
    70,808.04/97,715.14 = 38,977.46/x
  3. Step 3: Cross multiply
    70,808.04x = 97,715.14 × 38,977.46
  4. Step 4: Simplify right side
    70,808.04x = 3,808,687,960.74
  5. Step 5: Solve for x
    x = 3,808,687,960.74/70,808.04
  6. Step 6: Final answer
    x = 53,788.92

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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.