Home / 81,585.19-112,587.43-45,778.53

Finding the Fourth Proportional to 81,585.19, 112,587.43 and 45,778.53

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Solution

The fourth proportional to 81,585.19, 112,587.43 and 45,778.53 is: 63,174.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,585.19 : 112,587.43 = 45,778.53 : x
  2. Step 2: Convert to fraction form
    81,585.19/112,587.43 = 45,778.53/x
  3. Step 3: Cross multiply
    81,585.19x = 112,587.43 × 45,778.53
  4. Step 4: Simplify right side
    81,585.19x = 5,154,087,041.88
  5. Step 5: Solve for x
    x = 5,154,087,041.88/81,585.19
  6. Step 6: Final answer
    x = 63,174.30

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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.