Home / 66,075.83-91,143.17-39,199.31

Finding the Fourth Proportional to 66,075.83, 91,143.17 and 39,199.31

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Solution

The fourth proportional to 66,075.83, 91,143.17 and 39,199.31 is: 54,070.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,075.83 : 91,143.17 = 39,199.31 : x
  2. Step 2: Convert to fraction form
    66,075.83/91,143.17 = 39,199.31/x
  3. Step 3: Cross multiply
    66,075.83x = 91,143.17 × 39,199.31
  4. Step 4: Simplify right side
    66,075.83x = 3,572,749,701.07
  5. Step 5: Solve for x
    x = 3,572,749,701.07/66,075.83
  6. Step 6: Final answer
    x = 54,070.45

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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.