Home / 72,321,178.16-99,803,958.26-39,282,072.46

Finding the Fourth Proportional to 72,321,178.16, 99,803,958.26 and 39,282,072.46

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Solution

The fourth proportional to 72,321,178.16, 99,803,958.26 and 39,282,072.46 is: 54,209,657.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,321,178.16 : 99,803,958.26 = 39,282,072.46 : x
  2. Step 2: Convert to fraction form
    72,321,178.16/99,803,958.26 = 39,282,072.46/x
  3. Step 3: Cross multiply
    72,321,178.16x = 99,803,958.26 × 39,282,072.46
  4. Step 4: Simplify right side
    72,321,178.16x = 3,920,506,320,164,136
  5. Step 5: Solve for x
    x = 3,920,506,320,164,136/72,321,178.16
  6. Step 6: Final answer
    x = 54,209,657.81

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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.