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Finding the Fourth Proportional to 86,248.70, 129,105.48 and 46,707.74

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Solution

The fourth proportional to 86,248.70, 129,105.48 and 46,707.74 is: 69,916.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,248.70 : 129,105.48 = 46,707.74 : x
  2. Step 2: Convert to fraction form
    86,248.70/129,105.48 = 46,707.74/x
  3. Step 3: Cross multiply
    86,248.70x = 129,105.48 × 46,707.74
  4. Step 4: Simplify right side
    86,248.70x = 6,030,225,192.42
  5. Step 5: Solve for x
    x = 6,030,225,192.42/86,248.70
  6. Step 6: Final answer
    x = 69,916.71

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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.