Home / 77,075.70-115,428.87-39,537.06

Finding the Fourth Proportional to 77,075.70, 115,428.87 and 39,537.06

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Solution

The fourth proportional to 77,075.70, 115,428.87 and 39,537.06 is: 59,210.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,075.70 : 115,428.87 = 39,537.06 : x
  2. Step 2: Convert to fraction form
    77,075.70/115,428.87 = 39,537.06/x
  3. Step 3: Cross multiply
    77,075.70x = 115,428.87 × 39,537.06
  4. Step 4: Simplify right side
    77,075.70x = 4,563,718,158.92
  5. Step 5: Solve for x
    x = 4,563,718,158.92/77,075.70
  6. Step 6: Final answer
    x = 59,210.86

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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.