Home / 71,970.08-99,316.48-39,263.28

Finding the Fourth Proportional to 71,970.08, 99,316.48 and 39,263.28

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Solution

The fourth proportional to 71,970.08, 99,316.48 and 39,263.28 is: 54,182.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,970.08 : 99,316.48 = 39,263.28 : x
  2. Step 2: Convert to fraction form
    71,970.08/99,316.48 = 39,263.28/x
  3. Step 3: Cross multiply
    71,970.08x = 99,316.48 × 39,263.28
  4. Step 4: Simplify right side
    71,970.08x = 3,899,490,762.85
  5. Step 5: Solve for x
    x = 3,899,490,762.85/71,970.08
  6. Step 6: Final answer
    x = 54,182.11

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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.