Home / 78,457,446.09-108,272,271.51-43,179,312.96

Finding the Fourth Proportional to 78,457,446.09, 108,272,271.51 and 43,179,312.96

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Solution

The fourth proportional to 78,457,446.09, 108,272,271.51 and 43,179,312.96 is: 59,587,999.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,457,446.09 : 108,272,271.51 = 43,179,312.96 : x
  2. Step 2: Convert to fraction form
    78,457,446.09/108,272,271.51 = 43,179,312.96/x
  3. Step 3: Cross multiply
    78,457,446.09x = 108,272,271.51 × 43,179,312.96
  4. Step 4: Simplify right side
    78,457,446.09x = 4,675,122,296,420,382
  5. Step 5: Solve for x
    x = 4,675,122,296,420,382/78,457,446.09
  6. Step 6: Final answer
    x = 59,587,999.98

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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.