Home / 85,535,999.60-128,279,116.20-47,215,871.60

Finding the Fourth Proportional to 85,535,999.60, 128,279,116.20 and 47,215,871.60

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Solution

The fourth proportional to 85,535,999.60, 128,279,116.20 and 47,215,871.60 is: 70,810,071.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,535,999.60 : 128,279,116.20 = 47,215,871.60 : x
  2. Step 2: Convert to fraction form
    85,535,999.60/128,279,116.20 = 47,215,871.60/x
  3. Step 3: Cross multiply
    85,535,999.60x = 128,279,116.20 × 47,215,871.60
  4. Step 4: Simplify right side
    85,535,999.60x = 6,056,810,279,460,680
  5. Step 5: Solve for x
    x = 6,056,810,279,460,680/85,535,999.60
  6. Step 6: Final answer
    x = 70,810,071.87

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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.