Home / 74,880,007.80-112,320,011.70-42,519,406.20

Finding the Fourth Proportional to 74,880,007.80, 112,320,011.70 and 42,519,406.20

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Solution

The fourth proportional to 74,880,007.80, 112,320,011.70 and 42,519,406.20 is: 63,779,109.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,880,007.80 : 112,320,011.70 = 42,519,406.20 : x
  2. Step 2: Convert to fraction form
    74,880,007.80/112,320,011.70 = 42,519,406.20/x
  3. Step 3: Cross multiply
    74,880,007.80x = 112,320,011.70 × 42,519,406.20
  4. Step 4: Simplify right side
    74,880,007.80x = 4,775,780,201,861,053
  5. Step 5: Solve for x
    x = 4,775,780,201,861,053/74,880,007.80
  6. Step 6: Final answer
    x = 63,779,109.30

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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.