Home / 85,209,987.60-127,814,981.40-39,776,374.80

Finding the Fourth Proportional to 85,209,987.60, 127,814,981.40 and 39,776,374.80

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Solution

The fourth proportional to 85,209,987.60, 127,814,981.40 and 39,776,374.80 is: 59,664,562.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,209,987.60 : 127,814,981.40 = 39,776,374.80 : x
  2. Step 2: Convert to fraction form
    85,209,987.60/127,814,981.40 = 39,776,374.80/x
  3. Step 3: Cross multiply
    85,209,987.60x = 127,814,981.40 × 39,776,374.80
  4. Step 4: Simplify right side
    85,209,987.60x = 5,084,016,605,221,429
  5. Step 5: Solve for x
    x = 5,084,016,605,221,429/85,209,987.60
  6. Step 6: Final answer
    x = 59,664,562.20

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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.