Home / 81,018,862.80-121,584,281.40-58,319,163.60

Finding the Fourth Proportional to 81,018,862.80, 121,584,281.40 and 58,319,163.60

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Solution

The fourth proportional to 81,018,862.80, 121,584,281.40 and 58,319,163.60 is: 87,519,046.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,018,862.80 : 121,584,281.40 = 58,319,163.60 : x
  2. Step 2: Convert to fraction form
    81,018,862.80/121,584,281.40 = 58,319,163.60/x
  3. Step 3: Cross multiply
    81,018,862.80x = 121,584,281.40 × 58,319,163.60
  4. Step 4: Simplify right side
    81,018,862.80x = 7,090,693,598,155,038
  5. Step 5: Solve for x
    x = 7,090,693,598,155,038/81,018,862.80
  6. Step 6: Final answer
    x = 87,519,046.22

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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.