Home / 76,320.24-105,322.80-42,329.40

Finding the Fourth Proportional to 76,320.24, 105,322.80 and 42,329.40

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Solution

The fourth proportional to 76,320.24, 105,322.80 and 42,329.40 is: 58,415.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,320.24 : 105,322.80 = 42,329.40 : x
  2. Step 2: Convert to fraction form
    76,320.24/105,322.80 = 42,329.40/x
  3. Step 3: Cross multiply
    76,320.24x = 105,322.80 × 42,329.40
  4. Step 4: Simplify right side
    76,320.24x = 4,458,250,930.32
  5. Step 5: Solve for x
    x = 4,458,250,930.32/76,320.24
  6. Step 6: Final answer
    x = 58,415.05

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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.