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Finding the Fourth Proportional to 98,514.50, 135,950.87 and 56,075.76

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Solution

The fourth proportional to 98,514.50, 135,950.87 and 56,075.76 is: 77,385.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,514.50 : 135,950.87 = 56,075.76 : x
  2. Step 2: Convert to fraction form
    98,514.50/135,950.87 = 56,075.76/x
  3. Step 3: Cross multiply
    98,514.50x = 135,950.87 × 56,075.76
  4. Step 4: Simplify right side
    98,514.50x = 7,623,548,498.10
  5. Step 5: Solve for x
    x = 7,623,548,498.10/98,514.50
  6. Step 6: Final answer
    x = 77,385.04

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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.