Home / 87,760,814.72-121,051,609.18-56,438,464.64

Finding the Fourth Proportional to 87,760,814.72, 121,051,609.18 and 56,438,464.64

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Solution

The fourth proportional to 87,760,814.72, 121,051,609.18 and 56,438,464.64 is: 77,847,579.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,760,814.72 : 121,051,609.18 = 56,438,464.64 : x
  2. Step 2: Convert to fraction form
    87,760,814.72/121,051,609.18 = 56,438,464.64/x
  3. Step 3: Cross multiply
    87,760,814.72x = 121,051,609.18 × 56,438,464.64
  4. Step 4: Simplify right side
    87,760,814.72x = 6,831,966,963,574,175
  5. Step 5: Solve for x
    x = 6,831,966,963,574,175/87,760,814.72
  6. Step 6: Final answer
    x = 77,847,579.08

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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.