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Finding the Fourth Proportional to 70,683.72, 97,545.65 and 40,478.82

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Solution

The fourth proportional to 70,683.72, 97,545.65 and 40,478.82 is: 55,861.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,683.72 : 97,545.65 = 40,478.82 : x
  2. Step 2: Convert to fraction form
    70,683.72/97,545.65 = 40,478.82/x
  3. Step 3: Cross multiply
    70,683.72x = 97,545.65 × 40,478.82
  4. Step 4: Simplify right side
    70,683.72x = 3,948,532,605.74
  5. Step 5: Solve for x
    x = 3,948,532,605.74/70,683.72
  6. Step 6: Final answer
    x = 55,861.98

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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.