Home / 86,943,979.20-130,415,968.80-56,332,977.60

Finding the Fourth Proportional to 86,943,979.20, 130,415,968.80 and 56,332,977.60

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Solution

The fourth proportional to 86,943,979.20, 130,415,968.80 and 56,332,977.60 is: 84,499,466.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,943,979.20 : 130,415,968.80 = 56,332,977.60 : x
  2. Step 2: Convert to fraction form
    86,943,979.20/130,415,968.80 = 56,332,977.60/x
  3. Step 3: Cross multiply
    86,943,979.20x = 130,415,968.80 × 56,332,977.60
  4. Step 4: Simplify right side
    86,943,979.20x = 7,346,719,849,092,699
  5. Step 5: Solve for x
    x = 7,346,719,849,092,699/86,943,979.20
  6. Step 6: Final answer
    x = 84,499,466.40

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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.