Home / 81,439,445.52-121,893,309.72-59,868,337.68

Finding the Fourth Proportional to 81,439,445.52, 121,893,309.72 and 59,868,337.68

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Solution

The fourth proportional to 81,439,445.52, 121,893,309.72 and 59,868,337.68 is: 89,607,066.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,439,445.52 : 121,893,309.72 = 59,868,337.68 : x
  2. Step 2: Convert to fraction form
    81,439,445.52/121,893,309.72 = 59,868,337.68/x
  3. Step 3: Cross multiply
    81,439,445.52x = 121,893,309.72 × 59,868,337.68
  4. Step 4: Simplify right side
    81,439,445.52x = 7,297,549,827,249,786
  5. Step 5: Solve for x
    x = 7,297,549,827,249,786/81,439,445.52
  6. Step 6: Final answer
    x = 89,607,066.71

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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.