Home / 81,804,861.72-112,896,241.02-47,011,421.88

Finding the Fourth Proportional to 81,804,861.72, 112,896,241.02 and 47,011,421.88

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Solution

The fourth proportional to 81,804,861.72, 112,896,241.02 and 47,011,421.88 is: 64,878,941.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,804,861.72 : 112,896,241.02 = 47,011,421.88 : x
  2. Step 2: Convert to fraction form
    81,804,861.72/112,896,241.02 = 47,011,421.88/x
  3. Step 3: Cross multiply
    81,804,861.72x = 112,896,241.02 × 47,011,421.88
  4. Step 4: Simplify right side
    81,804,861.72x = 5,307,412,815,257,382
  5. Step 5: Solve for x
    x = 5,307,412,815,257,382/81,804,861.72
  6. Step 6: Final answer
    x = 64,878,941.22

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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.