Home / 80,910,312.64-121,327,736.16-42,038,314.36

Finding the Fourth Proportional to 80,910,312.64, 121,327,736.16 and 42,038,314.36

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Solution

The fourth proportional to 80,910,312.64, 121,327,736.16 and 42,038,314.36 is: 63,037,866.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,910,312.64 : 121,327,736.16 = 42,038,314.36 : x
  2. Step 2: Convert to fraction form
    80,910,312.64/121,327,736.16 = 42,038,314.36/x
  3. Step 3: Cross multiply
    80,910,312.64x = 121,327,736.16 × 42,038,314.36
  4. Step 4: Simplify right side
    80,910,312.64x = 5,100,413,513,281,219
  5. Step 5: Solve for x
    x = 5,100,413,513,281,219/80,910,312.64
  6. Step 6: Final answer
    x = 63,037,866.83

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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.