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Finding the Fourth Proportional to 101,779.83, 140,457.02 and 56,460.76

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Solution

The fourth proportional to 101,779.83, 140,457.02 and 56,460.76 is: 77,916.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,779.83 : 140,457.02 = 56,460.76 : x
  2. Step 2: Convert to fraction form
    101,779.83/140,457.02 = 56,460.76/x
  3. Step 3: Cross multiply
    101,779.83x = 140,457.02 × 56,460.76
  4. Step 4: Simplify right side
    101,779.83x = 7,930,309,463.09
  5. Step 5: Solve for x
    x = 7,930,309,463.09/101,779.83
  6. Step 6: Final answer
    x = 77,916.32

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1.5x scale

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.