Home / 49,075.40-73,613.10-12,139.40

Finding the Fourth Proportional to 49,075.40, 73,613.10 and 12,139.40

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Solution

The fourth proportional to 49,075.40, 73,613.10 and 12,139.40 is: 18,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,075.40 : 73,613.10 = 12,139.40 : x
  2. Step 2: Convert to fraction form
    49,075.40/73,613.10 = 12,139.40/x
  3. Step 3: Cross multiply
    49,075.40x = 73,613.10 × 12,139.40
  4. Step 4: Simplify right side
    49,075.40x = 893,618,866.14
  5. Step 5: Solve for x
    x = 893,618,866.14/49,075.40
  6. Step 6: Final answer
    x = 18,209.10

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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.