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Finding the Fourth Proportional to 84,320.32, 116,386.32 and 55,660.92

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Solution

The fourth proportional to 84,320.32, 116,386.32 and 55,660.92 is: 76,828.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,320.32 : 116,386.32 = 55,660.92 : x
  2. Step 2: Convert to fraction form
    84,320.32/116,386.32 = 55,660.92/x
  3. Step 3: Cross multiply
    84,320.32x = 116,386.32 × 55,660.92
  4. Step 4: Simplify right side
    84,320.32x = 6,478,169,646.61
  5. Step 5: Solve for x
    x = 6,478,169,646.61/84,320.32
  6. Step 6: Final answer
    x = 76,828.10

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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.