Home / 83,421.15-115,124.05-45,695.40

Finding the Fourth Proportional to 83,421.15, 115,124.05 and 45,695.40

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Solution

The fourth proportional to 83,421.15, 115,124.05 and 45,695.40 is: 63,061.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,421.15 : 115,124.05 = 45,695.40 : x
  2. Step 2: Convert to fraction form
    83,421.15/115,124.05 = 45,695.40/x
  3. Step 3: Cross multiply
    83,421.15x = 115,124.05 × 45,695.40
  4. Step 4: Simplify right side
    83,421.15x = 5,260,639,514.37
  5. Step 5: Solve for x
    x = 5,260,639,514.37/83,421.15
  6. Step 6: Final answer
    x = 63,061.22

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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.