Home / 84,248,621.20-126,372,931.80-69,887,904.40

Finding the Fourth Proportional to 84,248,621.20, 126,372,931.80 and 69,887,904.40

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Solution

The fourth proportional to 84,248,621.20, 126,372,931.80 and 69,887,904.40 is: 104,831,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,248,621.20 : 126,372,931.80 = 69,887,904.40 : x
  2. Step 2: Convert to fraction form
    84,248,621.20/126,372,931.80 = 69,887,904.40/x
  3. Step 3: Cross multiply
    84,248,621.20x = 126,372,931.80 × 69,887,904.40
  4. Step 4: Simplify right side
    84,248,621.20x = 8,831,939,376,386,120
  5. Step 5: Solve for x
    x = 8,831,939,376,386,120/84,248,621.20
  6. Step 6: Final answer
    x = 104,831,856.60

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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.