Home / 90,721,312.40-136,081,968.60-49,906,643.60

Finding the Fourth Proportional to 90,721,312.40, 136,081,968.60 and 49,906,643.60

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Solution

The fourth proportional to 90,721,312.40, 136,081,968.60 and 49,906,643.60 is: 74,859,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,721,312.40 : 136,081,968.60 = 49,906,643.60 : x
  2. Step 2: Convert to fraction form
    90,721,312.40/136,081,968.60 = 49,906,643.60/x
  3. Step 3: Cross multiply
    90,721,312.40x = 136,081,968.60 × 49,906,643.60
  4. Step 4: Simplify right side
    90,721,312.40x = 6,791,394,307,306,591
  5. Step 5: Solve for x
    x = 6,791,394,307,306,591/90,721,312.40
  6. Step 6: Final answer
    x = 74,859,965.40

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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.