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Finding the Fourth Proportional to 60,675,991.80, 91,013,987.70 and 40,268,657.40

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Solution

The fourth proportional to 60,675,991.80, 91,013,987.70 and 40,268,657.40 is: 60,402,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,675,991.80 : 91,013,987.70 = 40,268,657.40 : x
  2. Step 2: Convert to fraction form
    60,675,991.80/91,013,987.70 = 40,268,657.40/x
  3. Step 3: Cross multiply
    60,675,991.80x = 91,013,987.70 × 40,268,657.40
  4. Step 4: Simplify right side
    60,675,991.80x = 3,665,011,089,299,114
  5. Step 5: Solve for x
    x = 3,665,011,089,299,114/60,675,991.80
  6. Step 6: Final answer
    x = 60,402,986.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.