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Finding the Fourth Proportional to 70,537.68, 97,220.79 and 67,215.87

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Solution

The fourth proportional to 70,537.68, 97,220.79 and 67,215.87 is: 92,642.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,537.68 : 97,220.79 = 67,215.87 : x
  2. Step 2: Convert to fraction form
    70,537.68/97,220.79 = 67,215.87/x
  3. Step 3: Cross multiply
    70,537.68x = 97,220.79 × 67,215.87
  4. Step 4: Simplify right side
    70,537.68x = 6,534,779,981.94
  5. Step 5: Solve for x
    x = 6,534,779,981.94/70,537.68
  6. Step 6: Final answer
    x = 92,642.40

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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.