Home / 79,128,449.17-118,549,182.85-77,406,580.33

Finding the Fourth Proportional to 79,128,449.17, 118,549,182.85 and 77,406,580.33

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Solution

The fourth proportional to 79,128,449.17, 118,549,182.85 and 77,406,580.33 is: 115,969,502.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,128,449.17 : 118,549,182.85 = 77,406,580.33 : x
  2. Step 2: Convert to fraction form
    79,128,449.17/118,549,182.85 = 77,406,580.33/x
  3. Step 3: Cross multiply
    79,128,449.17x = 118,549,182.85 × 77,406,580.33
  4. Step 4: Simplify right side
    79,128,449.17x = 9,176,486,845,334,382
  5. Step 5: Solve for x
    x = 9,176,486,845,334,382/79,128,449.17
  6. Step 6: Final answer
    x = 115,969,502.01

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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.