Home / 98,840.14-136,389.21-56,390.50

Finding the Fourth Proportional to 98,840.14, 136,389.21 and 56,390.50

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Solution

The fourth proportional to 98,840.14, 136,389.21 and 56,390.50 is: 77,813.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,840.14 : 136,389.21 = 56,390.50 : x
  2. Step 2: Convert to fraction form
    98,840.14/136,389.21 = 56,390.50/x
  3. Step 3: Cross multiply
    98,840.14x = 136,389.21 × 56,390.50
  4. Step 4: Simplify right side
    98,840.14x = 7,691,055,746.51
  5. Step 5: Solve for x
    x = 7,691,055,746.51/98,840.14
  6. Step 6: Final answer
    x = 77,813.08

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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.