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Finding the Fourth Proportional to 89,075.80, 133,613.70 and 47,603.80

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Solution

The fourth proportional to 89,075.80, 133,613.70 and 47,603.80 is: 71,405.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,075.80 : 133,613.70 = 47,603.80 : x
  2. Step 2: Convert to fraction form
    89,075.80/133,613.70 = 47,603.80/x
  3. Step 3: Cross multiply
    89,075.80x = 133,613.70 × 47,603.80
  4. Step 4: Simplify right side
    89,075.80x = 6,360,519,852.06
  5. Step 5: Solve for x
    x = 6,360,519,852.06/89,075.80
  6. Step 6: Final answer
    x = 71,405.70

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1.5x scale

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.