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Finding the Fourth Proportional to 64,737.70, 97,106.55 and 38,428.90

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Solution

The fourth proportional to 64,737.70, 97,106.55 and 38,428.90 is: 57,643.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,737.70 : 97,106.55 = 38,428.90 : x
  2. Step 2: Convert to fraction form
    64,737.70/97,106.55 = 38,428.90/x
  3. Step 3: Cross multiply
    64,737.70x = 97,106.55 × 38,428.90
  4. Step 4: Simplify right side
    64,737.70x = 3,731,697,899.30
  5. Step 5: Solve for x
    x = 3,731,697,899.30/64,737.70
  6. Step 6: Final answer
    x = 57,643.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.