Home / 85,974,604.85-128,842,595.52-39,173,715.53

Finding the Fourth Proportional to 85,974,604.85, 128,842,595.52 and 39,173,715.53

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Solution

The fourth proportional to 85,974,604.85, 128,842,595.52 and 39,173,715.53 is: 58,706,209.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,974,604.85 : 128,842,595.52 = 39,173,715.53 : x
  2. Step 2: Convert to fraction form
    85,974,604.85/128,842,595.52 = 39,173,715.53/x
  3. Step 3: Cross multiply
    85,974,604.85x = 128,842,595.52 × 39,173,715.53
  4. Step 4: Simplify right side
    85,974,604.85x = 5,047,243,184,739,378
  5. Step 5: Solve for x
    x = 5,047,243,184,739,378/85,974,604.85
  6. Step 6: Final answer
    x = 58,706,209.74

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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.