Home / 78,457,399.71-108,272,207.57-43,179,266.66

Finding the Fourth Proportional to 78,457,399.71, 108,272,207.57 and 43,179,266.66

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Solution

The fourth proportional to 78,457,399.71, 108,272,207.57 and 43,179,266.66 is: 59,587,936.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,457,399.71 : 108,272,207.57 = 43,179,266.66 : x
  2. Step 2: Convert to fraction form
    78,457,399.71/108,272,207.57 = 43,179,266.66/x
  3. Step 3: Cross multiply
    78,457,399.71x = 108,272,207.57 × 43,179,266.66
  4. Step 4: Simplify right side
    78,457,399.71x = 4,675,114,521,774,643
  5. Step 5: Solve for x
    x = 4,675,114,521,774,643/78,457,399.71
  6. Step 6: Final answer
    x = 59,587,936.12

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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.