Home / 78,482,738.84-108,316,492.79-45,005,318.82

Finding the Fourth Proportional to 78,482,738.84, 108,316,492.79 and 45,005,318.82

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Solution

The fourth proportional to 78,482,738.84, 108,316,492.79 and 45,005,318.82 is: 62,113,253.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,482,738.84 : 108,316,492.79 = 45,005,318.82 : x
  2. Step 2: Convert to fraction form
    78,482,738.84/108,316,492.79 = 45,005,318.82/x
  3. Step 3: Cross multiply
    78,482,738.84x = 108,316,492.79 × 45,005,318.82
  4. Step 4: Simplify right side
    78,482,738.84x = 4,874,818,291,253,155
  5. Step 5: Solve for x
    x = 4,874,818,291,253,155/78,482,738.84
  6. Step 6: Final answer
    x = 62,113,253.99

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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.