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Finding the Fourth Proportional to 70,658,695.40, 105,988,043.10 and 55,353,194.60

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Solution

The fourth proportional to 70,658,695.40, 105,988,043.10 and 55,353,194.60 is: 83,029,791.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,658,695.40 : 105,988,043.10 = 55,353,194.60 : x
  2. Step 2: Convert to fraction form
    70,658,695.40/105,988,043.10 = 55,353,194.60/x
  3. Step 3: Cross multiply
    70,658,695.40x = 105,988,043.10 × 55,353,194.60
  4. Step 4: Simplify right side
    70,658,695.40x = 5,866,776,774,987,487
  5. Step 5: Solve for x
    x = 5,866,776,774,987,487/70,658,695.40
  6. Step 6: Final answer
    x = 83,029,791.90

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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.