Home / 72,321,177.16-99,803,956.88-39,282,071.46

Finding the Fourth Proportional to 72,321,177.16, 99,803,956.88 and 39,282,071.46

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Solution

The fourth proportional to 72,321,177.16, 99,803,956.88 and 39,282,071.46 is: 54,209,656.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,321,177.16 : 99,803,956.88 = 39,282,071.46 : x
  2. Step 2: Convert to fraction form
    72,321,177.16/99,803,956.88 = 39,282,071.46/x
  3. Step 3: Cross multiply
    72,321,177.16x = 99,803,956.88 × 39,282,071.46
  4. Step 4: Simplify right side
    72,321,177.16x = 3,920,506,166,150,918.50
  5. Step 5: Solve for x
    x = 3,920,506,166,150,918.50/72,321,177.16
  6. Step 6: Final answer
    x = 54,209,656.43

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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.