Home / 74,688.90-103,075.78-45,629.70

Finding the Fourth Proportional to 74,688.90, 103,075.78 and 45,629.70

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Solution

The fourth proportional to 74,688.90, 103,075.78 and 45,629.70 is: 62,972.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,688.90 : 103,075.78 = 45,629.70 : x
  2. Step 2: Convert to fraction form
    74,688.90/103,075.78 = 45,629.70/x
  3. Step 3: Cross multiply
    74,688.90x = 103,075.78 × 45,629.70
  4. Step 4: Simplify right side
    74,688.90x = 4,703,316,918.67
  5. Step 5: Solve for x
    x = 4,703,316,918.67/74,688.90
  6. Step 6: Final answer
    x = 62,972.10

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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.