Home / 42,988.12-64,465.81-16,686.74

Finding the Fourth Proportional to 42,988.12, 64,465.81 and 16,686.74

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Solution

The fourth proportional to 42,988.12, 64,465.81 and 16,686.74 is: 25,023.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,988.12 : 64,465.81 = 16,686.74 : x
  2. Step 2: Convert to fraction form
    42,988.12/64,465.81 = 16,686.74/x
  3. Step 3: Cross multiply
    42,988.12x = 64,465.81 × 16,686.74
  4. Step 4: Simplify right side
    42,988.12x = 1,075,724,329.81
  5. Step 5: Solve for x
    x = 1,075,724,329.81/42,988.12
  6. Step 6: Final answer
    x = 25,023.76

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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.