Home / 78,035.32-107,688.94-42,225.71

Finding the Fourth Proportional to 78,035.32, 107,688.94 and 42,225.71

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Solution

The fourth proportional to 78,035.32, 107,688.94 and 42,225.71 is: 58,271.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,035.32 : 107,688.94 = 42,225.71 : x
  2. Step 2: Convert to fraction form
    78,035.32/107,688.94 = 42,225.71/x
  3. Step 3: Cross multiply
    78,035.32x = 107,688.94 × 42,225.71
  4. Step 4: Simplify right side
    78,035.32x = 4,547,241,306.64
  5. Step 5: Solve for x
    x = 4,547,241,306.64/78,035.32
  6. Step 6: Final answer
    x = 58,271.58

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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.