Home / 87,070.80-130,431.18-45,430.32

Finding the Fourth Proportional to 87,070.80, 130,431.18 and 45,430.32

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Solution

The fourth proportional to 87,070.80, 130,431.18 and 45,430.32 is: 68,054.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,070.80 : 130,431.18 = 45,430.32 : x
  2. Step 2: Convert to fraction form
    87,070.80/130,431.18 = 45,430.32/x
  3. Step 3: Cross multiply
    87,070.80x = 130,431.18 × 45,430.32
  4. Step 4: Simplify right side
    87,070.80x = 5,925,530,245.38
  5. Step 5: Solve for x
    x = 5,925,530,245.38/87,070.80
  6. Step 6: Final answer
    x = 68,054.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.