Home / 87,418,529.36-120,645,779.64-65,353,818.32

Finding the Fourth Proportional to 87,418,529.36, 120,645,779.64 and 65,353,818.32

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Solution

The fourth proportional to 87,418,529.36, 120,645,779.64 and 65,353,818.32 is: 90,194,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,418,529.36 : 120,645,779.64 = 65,353,818.32 : x
  2. Step 2: Convert to fraction form
    87,418,529.36/120,645,779.64 = 65,353,818.32/x
  3. Step 3: Cross multiply
    87,418,529.36x = 120,645,779.64 × 65,353,818.32
  4. Step 4: Simplify right side
    87,418,529.36x = 7,884,662,363,667,315
  5. Step 5: Solve for x
    x = 7,884,662,363,667,315/87,418,529.36
  6. Step 6: Final answer
    x = 90,194,406.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.