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Finding the Fourth Proportional to 77,486.76, 106,728.03 and 59,547.42

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Solution

The fourth proportional to 77,486.76, 106,728.03 and 59,547.42 is: 82,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,486.76 : 106,728.03 = 59,547.42 : x
  2. Step 2: Convert to fraction form
    77,486.76/106,728.03 = 59,547.42/x
  3. Step 3: Cross multiply
    77,486.76x = 106,728.03 × 59,547.42
  4. Step 4: Simplify right side
    77,486.76x = 6,355,378,828.18
  5. Step 5: Solve for x
    x = 6,355,378,828.18/77,486.76
  6. Step 6: Final answer
    x = 82,018.90

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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.