Home / 81,430.16-112,382.52-45,621.68

Finding the Fourth Proportional to 81,430.16, 112,382.52 and 45,621.68

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Solution

The fourth proportional to 81,430.16, 112,382.52 and 45,621.68 is: 62,962.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,430.16 : 112,382.52 = 45,621.68 : x
  2. Step 2: Convert to fraction form
    81,430.16/112,382.52 = 45,621.68/x
  3. Step 3: Cross multiply
    81,430.16x = 112,382.52 × 45,621.68
  4. Step 4: Simplify right side
    81,430.16x = 5,127,079,365.03
  5. Step 5: Solve for x
    x = 5,127,079,365.03/81,430.16
  6. Step 6: Final answer
    x = 62,962.90

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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.