Home / 80,751,639.80-121,127,459.70-74,516,065.40

Finding the Fourth Proportional to 80,751,639.80, 121,127,459.70 and 74,516,065.40

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Solution

The fourth proportional to 80,751,639.80, 121,127,459.70 and 74,516,065.40 is: 111,774,098.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,751,639.80 : 121,127,459.70 = 74,516,065.40 : x
  2. Step 2: Convert to fraction form
    80,751,639.80/121,127,459.70 = 74,516,065.40/x
  3. Step 3: Cross multiply
    80,751,639.80x = 121,127,459.70 × 74,516,065.40
  4. Step 4: Simplify right side
    80,751,639.80x = 9,025,941,708,741,066
  5. Step 5: Solve for x
    x = 9,025,941,708,741,066/80,751,639.80
  6. Step 6: Final answer
    x = 111,774,098.10

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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.