Home / 71,817,941.80-99,109,393.86-40,880,103.40

Finding the Fourth Proportional to 71,817,941.80, 99,109,393.86 and 40,880,103.40

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Solution

The fourth proportional to 71,817,941.80, 99,109,393.86 and 40,880,103.40 is: 56,414,903.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,817,941.80 : 99,109,393.86 = 40,880,103.40 : x
  2. Step 2: Convert to fraction form
    71,817,941.80/99,109,393.86 = 40,880,103.40/x
  3. Step 3: Cross multiply
    71,817,941.80x = 99,109,393.86 × 40,880,103.40
  4. Step 4: Simplify right side
    71,817,941.80x = 4,051,602,268,908,125
  5. Step 5: Solve for x
    x = 4,051,602,268,908,125/71,817,941.80
  6. Step 6: Final answer
    x = 56,414,903.68

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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.