Home / 72,290,554.24-99,761,085.12-39,697,571.20

Finding the Fourth Proportional to 72,290,554.24, 99,761,085.12 and 39,697,571.20

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Solution

The fourth proportional to 72,290,554.24, 99,761,085.12 and 39,697,571.20 is: 54,782,714.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,290,554.24 : 99,761,085.12 = 39,697,571.20 : x
  2. Step 2: Convert to fraction form
    72,290,554.24/99,761,085.12 = 39,697,571.20/x
  3. Step 3: Cross multiply
    72,290,554.24x = 99,761,085.12 × 39,697,571.20
  4. Step 4: Simplify right side
    72,290,554.24x = 3,960,272,779,540,461
  5. Step 5: Solve for x
    x = 3,960,272,779,540,461/72,290,554.24
  6. Step 6: Final answer
    x = 54,782,714.30

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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.