Home / 85,824,341.20-128,736,511.80-71,463,624.40

Finding the Fourth Proportional to 85,824,341.20, 128,736,511.80 and 71,463,624.40

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Solution

The fourth proportional to 85,824,341.20, 128,736,511.80 and 71,463,624.40 is: 107,195,436.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,824,341.20 : 128,736,511.80 = 71,463,624.40 : x
  2. Step 2: Convert to fraction form
    85,824,341.20/128,736,511.80 = 71,463,624.40/x
  3. Step 3: Cross multiply
    85,824,341.20x = 128,736,511.80 × 71,463,624.40
  4. Step 4: Simplify right side
    85,824,341.20x = 9,199,977,725,841,368
  5. Step 5: Solve for x
    x = 9,199,977,725,841,368/85,824,341.20
  6. Step 6: Final answer
    x = 107,195,436.60

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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.