Home / 83,721.12-115,533.18-45,479.76

Finding the Fourth Proportional to 83,721.12, 115,533.18 and 45,479.76

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Solution

The fourth proportional to 83,721.12, 115,533.18 and 45,479.76 is: 62,761.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,721.12 : 115,533.18 = 45,479.76 : x
  2. Step 2: Convert to fraction form
    83,721.12/115,533.18 = 45,479.76/x
  3. Step 3: Cross multiply
    83,721.12x = 115,533.18 × 45,479.76
  4. Step 4: Simplify right side
    83,721.12x = 5,254,421,298.44
  5. Step 5: Solve for x
    x = 5,254,421,298.44/83,721.12
  6. Step 6: Final answer
    x = 62,761.00

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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.