Home / 85,849,621.40-128,774,432.10-51,753,416.60

Finding the Fourth Proportional to 85,849,621.40, 128,774,432.10 and 51,753,416.60

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Solution

The fourth proportional to 85,849,621.40, 128,774,432.10 and 51,753,416.60 is: 77,630,124.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,849,621.40 : 128,774,432.10 = 51,753,416.60 : x
  2. Step 2: Convert to fraction form
    85,849,621.40/128,774,432.10 = 51,753,416.60/x
  3. Step 3: Cross multiply
    85,849,621.40x = 128,774,432.10 × 51,753,416.60
  4. Step 4: Simplify right side
    85,849,621.40x = 6,664,516,831,899,713
  5. Step 5: Solve for x
    x = 6,664,516,831,899,713/85,849,621.40
  6. Step 6: Final answer
    x = 77,630,124.90

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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.