Home / 72,220,140-99,663,986.37-39,180,389.13

Finding the Fourth Proportional to 72,220,140, 99,663,986.37 and 39,180,389.13

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Solution

The fourth proportional to 72,220,140, 99,663,986.37 and 39,180,389.13 is: 54,069,041.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220,140 : 99,663,986.37 = 39,180,389.13 : x
  2. Step 2: Convert to fraction form
    72,220,140/99,663,986.37 = 39,180,389.13/x
  3. Step 3: Cross multiply
    72,220,140x = 99,663,986.37 × 39,180,389.13
  4. Step 4: Simplify right side
    72,220,140x = 3,904,873,768,223,616.50
  5. Step 5: Solve for x
    x = 3,904,873,768,223,616.50/72,220,140
  6. Step 6: Final answer
    x = 54,069,041.80

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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.